Volkswagen PHAETON - Service Manual download pdf (Page 68)

Heating/air-conditioning system

Air distribution in the vehicle

The blower sucks in fresh air through the dust

and pollen filter and conducts it to the vaporiser.

The airflow in the air-conditioning device is sepa-

rated for the first time behind the vaporiser:

the main part flows through the heat exchangers

and a smaller part bypasses the heat exchangers

and is fed to the air flaps in the air-conditioning

device.

Its structural design with two adjacent heat

exchangers results in a right-left distribution for

the ventilation of the vehicle's interior.

The temperature of both of these airflows for the

left and right-half of the vehicle is to a great

extent determined by the temperature settings for

the front seats.

The subsequent division of the air behind the

heat exchangers to the individual air outlets is

effected by electro-mechanical flaps on the air-

conditioning device and in the dash panel.

In doing so, the air for the outlets in the B-pillars

and for the rear footwell air outlets can be

heated further with additional heating elements.

270_239

Dust and pollen

filter Right heat exchanger

Footwell air outlet and outlet for defrost and

direct ventilation in the B-pillar

Centre console air outlet

Fresh air

Air-conditioning

device

Vaporiser

Left heat exchanger

Additional heating elementFresh air blower

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Volkswagen PHAETON - Service Manual Page 68